Home / 858,140.20-1,287,210.30-227,117.80

Finding the Fourth Proportional to 858,140.20, 1,287,210.30 and 227,117.80

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Solution

The fourth proportional to 858,140.20, 1,287,210.30 and 227,117.80 is: 340,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,140.20 : 1,287,210.30 = 227,117.80 : x
  2. Step 2: Convert to fraction form
    858,140.20/1,287,210.30 = 227,117.80/x
  3. Step 3: Cross multiply
    858,140.20x = 1,287,210.30 × 227,117.80
  4. Step 4: Simplify right side
    858,140.20x = 292,348,371,473.34
  5. Step 5: Solve for x
    x = 292,348,371,473.34/858,140.20
  6. Step 6: Final answer
    x = 340,676.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.